"Ship fast" is romanticised so much that we now treat speed like a product virtue on its own, whereas I don't think it is.
I think speed is useful when it serves the product. If someone has a "long" timeline, already has a user )even if it's for internal use), and is learning from actual usage, I don’t think they should be pressured just because people keep saying "just ship it."
I think you should take the time to build something you are comfortable attaching your name to, especially if it is a passion project.
Whether you launch in two weeks or five months, if the product has no unique workflow, proprietary data, integration depth, switching cost, network effect, distribution advantage, or some other form of defensibility, it is still clonable and replaceable. Shipping faster does not and will not fix that.
And when you look at many of the products being pushed to "just ship", you find out that they do not even pass basic accessibility checks, not to talk of proper accessibility verification, security, privacy, compliance, reliability, interoperability, and the other things serious customers eventually care about.
One thing we need to keep in mind is that there is a difference between a software that runs and software that is ready to be adopted. So instead of asking only how fast you can ship, I think you should also ask what gets harder to replace the longer a customer uses this product.
Maybe it is the workflow, accumulated data, integrations, collaboration history, institutional knowledge or maybe even just trust. Those things take time to build.
With all said and done, taking your time should not be an excuse for endless perfectionism. Feedback still matters, as well as real users. But deliberate development is not the same thing as fear of shipping.
Six months is not a long time if those six months produce something better, harder to replace, and easier for serious customers to trust.
The market will care much less about whether you launched three months earlier than whether you built something people would actually notice if it disappeared.
At the end of the day, I think the most important thing is to have enough information and engineering discipline to do the right thing at the right time for that particular product.